Motor-vehicle-control device



1,565,458 Dec. 15, 1925 H. D. HUKILL MOTOR VEHICLE CONTROL DEVICE Filed Aug. 20. 1924 y 9 lu l P L@ i (\1\` MQW. Z//m D j b ll Q g N "Illu-lulu" llliijjlml@ mmmllll v LQ @Mm INVENTOR HENRY DJ-IUKILL wml BY Patented Dec. l5, 192,5.

narran srAras PA'raNr carica.. v

narrar n.' nomma, or PITTSBURGH, PENNSYLVANIA, Assrenon 'ro THE WESTINGL- nonsn Ara paAxn COMPANY, or wILMnnDINe, PnNNsYLvnNIA, A CORPORATION or PnNNsvLvANrA.V

illlTOR-VEEIGLE-CONTROL DVIGE.

Application filed August '20, 19211.V Serialllo. 783,1t13.

To all whom t may conce/m:

Be it known that I, HENRY l). HUKILL., a citizen of the United States, residing at l3it-tsburgh,-in the county of Allegheny and 5 State ont Pennsylvania, have invented new and useful Improvements inMotor-Vehicle- Control Devices, of=which the following is a specication.

This invention relates to motor vehicle l a rotary slide valve 26 contained in valve chamber 27, said valve chamber being confluid presl@ controlling devices and has forcits principal object to provide means lor applying the brakes and for disengaging the engine clutch when the operator becomes incapacitated. f 4

ln the accompanying drawing; Fig. 1 is a diagrammatic view of a, motor vehicle controlling apparatus embodying my improvement; .and Fig. 2 a central vertical section of the brake valve device.,

As shown in the drawing, the apparatus may comprise a brake valve device 1 having an operating arm 2, which may be connected by a rod 3 with a pedal lever 4; A spring 5 is connected to the arm 2 and tends to move the brake valve to emergency position, when brake valve device is thrown to emergency pov sition, the exigirle clutch is automatically disengaged and lor this' purpose a diaphragm chamber 9 is provided which contains a lezrible diaphragm ,10. The chamber v11 at one side of the diaphragm 10 isgconnected 4@ through pipe 12 with the brake valve device 1 and engaging saidl diaphragm at the opposite side is a pressure plate 13 carrying a rod 14. The usual engine clutch is represented diagrammatically in the drawing by the reference numeral 15 and operatively connected to the moving part 16 of the clutch is the `usual clutch operating pedal lever 17. s Said lever is provided with a pin 1d located above the 'ulcrn-m oint 19 and the diaphragm rod 14 is provi ed with an end, portion in which Vsaid pin engages.

As shown inFig. 2, the brake valve device,

.l 1 includes a. rotatable spindle 22 connected having an elongated'slot 2()` to the operating arm 2 and provided -with a cam 23 for varying the compression of spring 24. Said spring acts on a flexible diaphragm 25 and the movement of the flexible diaphragm controls the operation of. Avalves (not shown) by which theadmission and release of uidunder pressureto and from the brake chamber 7 is-edected.

The spindle 22 is also adapted tonperate nected through pipe 28 with the sure supply pipe 6.

Pipe and passage 12 leads to the seat .0f the rotary valve 26 and in emergency position the pipe 12 is connected .to rotary valve chamber 27 through a port 29 in the valve.

ln other positions ofthe rotary valve, the pipe 12 is connected through a cavity (notv shown) inthe rotary valve with an atmospheric exhaust port..a

ln operation, when the operatorhas his.

foot on the pedal lever 4 and holds samein the position shown, the brake valve ports are positioned so that the brakes are released and the clutch operating diaphragm chamher 11 is connected to the atmosphere.' If it is desired to apply the brakes, the operatorallows the pedal lever 4 to move inv a clockwise direction. This permits a corresponding movement of the arm 2 and the cam 23 vis then positioned so as to compress the spring 24 and thereby causes. the diaphragm 25 to operate and thus cause the openin'gof a valve for supplying fluid under pressure to the brake chamber If the operator should entirely removev his therefore supplied from valve chamber27,

through port '29 to pipe 12 and thus the k100.

diaphragm 10 is operated by vfluid supplied to chamber 11, so as to shift the rod 14 outwardly. Tha outward movement of the rod- 14 then elects the movement of thepedal g lever 17, so as to shift the movable member 16 of the engine clutch vand'thereby disengage the clutch. u

11a-ving now, described my lnventlon, what I claim as neW and desire 'to secure by Letters Patent, is

1. In a vehicle control mechanism, the combination With an engine clutch and a vehicle brake, of fiuid pressure operated means for controlling the -engine clutch, Huid pressure o erated means for applying the brakes an means operated upon release by the operator for supplying Huid under pressure to operate said clutch operating means and said brake applying means.

meals-ee 2. In' a vehicle control mechanism, I`the combination with a fluid pressure brake chamber anran engine clutch, of means 0pated by Huid under pressure for disengaging said clutch, and means operated upon release by the vehice operator for simultaneously supplying Huid under pressure to said brake chamber and to said clutch operating nm'aanse in testimony whereof' have hereunto set my hand. Y

HENRY D. HUKLL, 

